What is an organ that produces enzymes that break down nutrients

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

How many moles are in 123.0 grams of kclo4?

Which of these describes the rate of this chemical reaction? h2 + cl2 → 2 hcl a. an increase in the concentration of hcl and h2 with time b. an increase in the concentration of hcl with time c. an increase in h2 and cl2 with time d. a decrease in hcl and cl2 with time